Determination of plutonium by solvent extraction—Liquid scintillation method |
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Authors: | Y Baba |
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Institution: | (1) Japan Atomic Energy Research Institute, Tokai-mura, Ibaraki-ken, (Japan) |
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Abstract: | A combined solvent extraction—liquid scintillation method is suggested for the determination of plutonium. The quenching by
twenty four extracting reagents was examined systematically, and the organo phosphorus extractants such as tributylphosphate
(TBP), bis-(2-ethyhexyl) phosphoric acid (HDEHP), and tri-n-octylphosphineoxide (TOPO) were shown to be least quenching compared
with amines and beta-diketones. Using TOPO, plutonium from 1 ng to 2 μg was determined within 5% of standard deviation, and
the detection limit was 3·10−10 g of239Pu. The quenching by the different ions and the effects of the radioactive elements were also shown. |
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